而这时，吴水森母亲的视力急剧下降，难以制作出要求精密度高的罗盘。

And then, Mr Ng Shui-Sen sharp decline in the mother's vision, it is difficult to produce high-precision requirements of the compass.

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汉森利用水来降低机器的温度，在这个过程中，水的温度上升，然后将水注入地下的冷却系统来自然冷却。

Hansen USES water to cool the machines, and as the water heats up in the process, he pipes it through the ground to chill it naturally.

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然而，科森博士的模型表明这种低效只有在对水和包含营养素的需求恒定的情况下才能发生。

Dr Corson's models show, however, that this inefficiency is true only if demand for water and the nutrients it contains is constant.

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